RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
the R_AAL0_MODE bit in the R_MP_CONFIG memory register in the receive
queue table.
12.5 JTAG Support
The AAL1gator-8 supports the IEEE Boundary Scan Specification as described
in the IEEE 1149.1 standards. The Test Access Port (TAP) consists of the five
standard pins, TRSTB, TCK, TMS, TDI and TDO used to control the TAP
controller and the boundary scan registers. The TRSTB input is the active-low
reset signal used to reset the TAP controller. TCK is the test clock used to
sample data on input, TDI and to output data on output, TDO. The TMS input is
used to direct the TAP controller through its states. The basic boundary scan
architecture is shown below.
Figure 77 Boundary Scan Architecture
Boundary Scan
TDI
Register
Device Identification
Register
Bypass
Register
Instruction
Register
and
Mux
DFF
TDO
Decode
Control
TMS
Test
Access
Port
Select
Tri-state Enable
Controller
TRSTB
TCK
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